A plane flying with a constant speed of 9 km/min passes over a ground radar station at an altitude of 11 km and climbs at an angle of 45 degrees. At what rate is the distance from the plane to the radar station increasing 2 minutes later?

Question

anonymous · Answer

side note: I know i have to use law of cosine, the answer i got was 7.68 km/min but the program I use says it is incorrect

superdavesuper · Answer

seems like a popular question n they just changed the figures in it. see the link below 4 a similar problem - same way to solve but w different figures of cuz: https://answers.yahoo.com/question/index?qid=20111014110455AAkiSZe good luck! :)

anonymous · Answer

oh wow thanks, i'll check it out and see where i messed up

superdavesuper · Answer

@Theanitrix good luck! sorry - ive to go otherwise i wuld work it out together :)

baru · Answer

we'll i hope you know differentiation,

we'll set it up this way,
let the radar station be at the origin, let time t=0 wn|dw:1446131294444:dw|